Darn, be careful with that quote. The Honda fibers cost me $17 each x 7, the steels were $6 each, then the tool was nearly $30. I might suggest getting the lock ring/washer that holds the nut too. These above prices are just 20% above dealer cost and no shipping charges. I get good pricing from a friend and local shop owner. I also recommend getting the Honda clutch gasket. It comes with sealer already on the gasket and goes on dry for a leak-free fit - something the Athena and others don't do.
Pay special care to get the inner and outter basket teeth lined-up, go very slowly when tightening those 4 small 6mm bolts on the clutch bearing. Make sure it doesn't bind and that you run each bolt in a turn or 2 at most going in an even pattern. The back-side is a machined surface and the bearing must go in straight or you'll break the post off all too easily. During this last install with the heavy springs, I had to back-off twice because the coils were binding. You'll feel it and be aware of any bolt getting "tight" before the whole bearing gets there. If 1 bolt gets tight before the others, it means there is a bind. Continued tightening of that bolt will result in a broken or stripped post. Take your time and light pressure and you'll be fine. At the end, you'll want 85 in/lbs of torque on those.
Good luck with your project.